Table 1.
Infection rates of Cryptosporidium determined by microscopy on each farm and the distribution of Cryptosporidium species, as determined by PCR-RFLP analysis of the SSU rRNA gene, and C. parvum subtypes, as identified by sequence analysis of the gp60 genea
| Farm | No. of samples tested | No. of Cryptosporidium-positive samples (%) | No. of samples positive fora: |
Subtype (no. of samples) | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| C. parvum | C. bovis | C. ryanae | C. andersoni | C. parvum-C. bovis | C. parvum-C. ryanae | C. parvum-C. andersoni | C. bovis-C. ryanae | ||||
| Jiaozuo | 75 | 9 (12) | 1 | 4 | 0 | 3 | 0 | 1 | 0 | 0 | IIdA19G1 (2) |
| Luoyang | 86 | 9 (10.5) | 0 | 3 | 0 | 3 | 0 | 0 | 3 | 0 | IIdA19G1 (3) |
| Shangqiu | 53 | 9 (17.0) | 8 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | IIdA19G1 (8) |
| Xinmi | 33 | 4 (12.1) | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Xinxiang | 40 | 16 (40) | 0 | 11 | 5 | 0 | 0 | 0 | 0 | 0 | |
| Zhengzhou A | 369 | 88 (23.8) | 26 | 36 | 10 | 0 | 5 | 3 | 0 | 8 | IIdA19G1 (34) |
| Zhengzhou B | 126 | 33 (26.2) | 19 | 5 | 2 | 6 | 1 | 0 | 0 | 0 | IIdA19G1 (20) |
| Zhongmou | 19 | 4 (21.1) | 0 | 2 | 1 | 0 | 0 | 0 | 0 | 1 | |
| Total (%)b | 801 | 172 (21.5) | 54 (31.4) | 65 (37.8) | 19 (11.0) | 12 (7.0) | 6 (3.5) | 4 (2.3) | 3 (1.7) | 9 (5.2) | IIdA19G1 (67) |
a
Mixed infections are indicated with a hyphen.
b
Total percentage values are given in parentheses.